/* roulang page: index */
:root{
      --rr-primary:#A4456F;
      --rr-primary-dark:#7E3154;
      --rr-coral:#E97972;
      --rr-apricot:#F4B37A;
      --rr-orange:#F4A261;
      --rr-green:#6FA083;
      --rr-bg:#FFF8F4;
      --rr-soft:#FBEDEA;
      --rr-soft-2:#FFF3EF;
      --rr-card:rgba(255,255,255,.88);
      --rr-title:#2F1E2B;
      --rr-text:#5F4A55;
      --rr-muted:#8B7480;
      --rr-border:#F0D7D2;
      --rr-border-strong:rgba(164,69,111,.22);
      --rr-gradient:linear-gradient(135deg,#A4456F 0%,#E97972 48%,#F4B37A 100%);
      --rr-gradient-soft:linear-gradient(135deg,rgba(164,69,111,.12),rgba(233,121,114,.12),rgba(244,179,122,.16));
      --rr-footer:linear-gradient(135deg,#3A2332 0%,#6D3650 52%,#8A5A3B 100%);
      --rr-radius-sm:14px;
      --rr-radius:24px;
      --rr-radius-lg:32px;
      --rr-radius-xl:36px;
      --rr-shadow:0 14px 40px rgba(94,50,70,.08);
      --rr-shadow-hover:0 20px 60px rgba(164,69,111,.16);
      --rr-focus:0 0 0 .25rem rgba(164,69,111,.24);
      --rr-container:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      color:var(--rr-text);
      background:
        radial-gradient(circle at 8% 4%,rgba(244,179,122,.20),transparent 34%),
        radial-gradient(circle at 92% 16%,rgba(164,69,111,.13),transparent 30%),
        linear-gradient(180deg,#FFF8F4 0%,#FFFDFC 42%,#FFF8F4 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:all .22s ease}
    a:hover{color:var(--rr-primary)}
    img{max-width:100%;height:auto}
    button,input,textarea,select{font:inherit}
    ::selection{background:rgba(164,69,111,.18);color:var(--rr-title)}
    .container,.container-lg,.container-xl{max-width:var(--rr-container)}
    .section{padding:96px 0;position:relative}
    .section-tight{padding:72px 0}
    .section-soft{
      background:
        radial-gradient(circle at 15% 25%,rgba(244,179,122,.16),transparent 28%),
        linear-gradient(180deg,#FBEDEA 0%,#FFF8F4 100%);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 13px;
      border:1px solid var(--rr-border);
      border-radius:999px;
      color:var(--rr-primary);
      background:rgba(255,255,255,.72);
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
      box-shadow:0 8px 24px rgba(164,69,111,.06);
    }
    .eyebrow::before{
      content:"";
      width:8px;
      height:8px;
      border-radius:999px;
      background:var(--rr-gradient);
      box-shadow:0 0 0 5px rgba(164,69,111,.10);
    }
    h1,h2,h3,h4,h5,h6{color:var(--rr-title);font-weight:800;letter-spacing:-.02em}
    h1{font-size:clamp(34px,5vw,56px);line-height:1.13;margin:18px 0 20px}
    h2{font-size:clamp(27px,3.3vw,40px);line-height:1.2;margin:14px 0}
    h3{font-size:clamp(21px,2.2vw,26px);line-height:1.28}
    .lead-text{font-size:18px;line-height:1.9;color:var(--rr-text)}
    .text-muted-rr{color:var(--rr-muted)}
    .btn-rr{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:9px;
      border-radius:999px;
      border:1px solid transparent;
      padding:13px 25px;
      font-weight:800;
      line-height:1.25;
      transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
      white-space:nowrap;
    }
    .btn-rr-primary{
      color:#fff;
      background:var(--rr-gradient);
      box-shadow:0 12px 30px rgba(164,69,111,.24);
    }
    .btn-rr-primary:hover{
      color:#fff;
      transform:translateY(-2px);
      box-shadow:0 18px 42px rgba(164,69,111,.30);
      filter:saturate(1.05);
    }
    .btn-rr-secondary{
      color:var(--rr-primary-dark);
      background:rgba(255,255,255,.82);
      border-color:var(--rr-border);
      box-shadow:0 10px 28px rgba(94,50,70,.06);
    }
    .btn-rr-secondary:hover{
      color:var(--rr-primary);
      background:#FFF3EF;
      border-color:rgba(164,69,111,.28);
      transform:translateY(-2px);
      box-shadow:0 16px 36px rgba(164,69,111,.12);
    }
    .btn-rr:focus,.nav-link:focus,.accordion-button:focus,.form-control:focus,.form-select:focus{
      outline:none;
      box-shadow:var(--rr-focus)!important;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1030;
      padding:14px 0;
      background:rgba(255,248,244,.78);
      backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(240,215,210,.72);
      box-shadow:0 10px 28px rgba(94,50,70,.05);
    }
    .navbar-rr{
      min-height:62px;
      padding:0;
    }
    .brand-wrap{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:270px;
      color:var(--rr-title);
    }
    .brand-mark{
      width:42px;
      height:42px;
      flex:0 0 42px;
      border-radius:16px;
      background:var(--rr-gradient);
      position:relative;
      box-shadow:0 12px 26px rgba(164,69,111,.22);
      overflow:hidden;
    }
    .brand-mark::before{
      content:"";
      position:absolute;
      inset:9px 12px 9px 10px;
      border-radius:14px 14px 14px 4px;
      background:rgba(255,255,255,.82);
      transform:rotate(-8deg);
    }
    .brand-mark::after{
      content:"";
      position:absolute;
      width:14px;
      height:14px;
      right:8px;
      bottom:8px;
      border-radius:50%;
      background:rgba(255,255,255,.42);
    }
    .brand-text{display:flex;flex-direction:column;line-height:1.18}
    .brand-title{
      max-width:275px;
      font-size:15px;
      font-weight:900;
      color:var(--rr-title);
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .brand-sub{font-size:12px;color:var(--rr-muted);font-weight:700;margin-top:3px}
    .nav-chip-group{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      border:1px solid var(--rr-border);
      border-radius:999px;
      background:rgba(255,255,255,.62);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.9);
    }
    .nav-chip-group .nav-link{
      border-radius:999px;
      padding:9px 16px;
      color:var(--rr-text);
      font-weight:800;
      font-size:14px;
    }
    .nav-chip-group .nav-link:hover{
      background:#FFF3EF;
      color:var(--rr-primary);
    }
    .nav-chip-group .nav-link.active{
      color:#fff;
      background:var(--rr-gradient);
      box-shadow:0 10px 22px rgba(164,69,111,.18);
    }
    .navbar-toggler{
      border:1px solid var(--rr-border);
      border-radius:16px;
      padding:9px 11px;
      background:rgba(255,255,255,.72);
    }
    .navbar-toggler:focus{box-shadow:var(--rr-focus)}
    .offcanvas-rr{
      background:linear-gradient(180deg,#FFF8F4,#FFF3EF);
      border-left:1px solid var(--rr-border);
    }
    .offcanvas-rr .offcanvas-title{font-weight:900;color:var(--rr-title)}
    .mobile-nav-list{
      display:grid;
      gap:10px;
      padding:12px 0;
    }
    .mobile-nav-list a{
      padding:13px 16px;
      border-radius:18px;
      background:rgba(255,255,255,.72);
      border:1px solid var(--rr-border);
      font-weight:800;
      color:var(--rr-text);
    }
    .mobile-nav-list a.active{
      color:#fff;
      background:var(--rr-gradient);
      border-color:transparent;
    }

    .hero{
      padding:76px 0 46px;
      position:relative;
      overflow:hidden;
    }
    .hero::before{
      content:"";
      position:absolute;
      width:680px;
      height:680px;
      right:-260px;
      top:-250px;
      background:radial-gradient(circle,rgba(233,121,114,.24),rgba(244,179,122,.12),transparent 68%);
      pointer-events:none;
    }
    .hero::after{
      content:"";
      position:absolute;
      width:420px;
      height:420px;
      left:-220px;
      bottom:-200px;
      background:radial-gradient(circle,rgba(164,69,111,.14),transparent 65%);
      pointer-events:none;
    }
    .hero-grid{position:relative;z-index:1;align-items:center}
    .hero-title .highlight{
      background:linear-gradient(135deg,#A4456F,#E97972 56%,#B36A39);
      -webkit-background-clip:text;
      background-clip:text;
      color:transparent;
    }
    .hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 26px}
    .metric-row{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:13px;
      margin-top:26px;
    }
    .metric{
      padding:16px 17px;
      border-radius:22px;
      background:rgba(255,255,255,.78);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
    }
    .metric strong{
      display:block;
      color:var(--rr-title);
      font-size:22px;
      line-height:1.15;
      margin-bottom:4px;
    }
    .metric span{font-size:13px;color:var(--rr-muted);font-weight:700}
    .product-panel{
      position:relative;
      border-radius:var(--rr-radius-xl);
      padding:26px;
      background:
        linear-gradient(180deg,rgba(255,255,255,.92),rgba(255,248,244,.82)),
        var(--rr-gradient-soft);
      border:1px solid rgba(164,69,111,.16);
      box-shadow:0 28px 76px rgba(94,50,70,.14);
      overflow:hidden;
    }
    .product-panel::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        radial-gradient(circle at 16% 12%,rgba(244,179,122,.28),transparent 25%),
        radial-gradient(circle at 88% 22%,rgba(164,69,111,.13),transparent 28%);
      pointer-events:none;
    }
    .panel-top,.panel-body,.panel-foot{position:relative;z-index:1}
    .panel-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      margin-bottom:18px;
      gap:12px;
    }
    .panel-dots{display:flex;gap:7px}
    .panel-dots i{
      width:10px;
      height:10px;
      border-radius:50%;
      background:rgba(164,69,111,.26);
    }
    .panel-status{
      padding:7px 12px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--rr-border);
      color:var(--rr-primary);
      font-weight:800;
      font-size:13px;
    }
    .preview-card{
      border-radius:24px;
      background:rgba(255,255,255,.78);
      border:1px solid var(--rr-border);
      padding:20px;
      margin-bottom:14px;
      box-shadow:0 12px 28px rgba(94,50,70,.06);
    }
    .preview-card.main{
      background:linear-gradient(135deg,rgba(164,69,111,.95),rgba(233,121,114,.86),rgba(244,179,122,.86));
      color:#fff;
      border-color:transparent;
    }
    .preview-card.main h3,.preview-card.main p{color:#fff}
    .preview-card h3{font-size:21px;margin-bottom:8px}
    .progress-rr{
      height:9px;
      border-radius:999px;
      background:rgba(255,255,255,.35);
      overflow:hidden;
      margin-top:16px;
    }
    .progress-rr span{
      display:block;
      height:100%;
      width:78%;
      background:#fff;
      border-radius:999px;
    }
    .module-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
    }
    .module-item{
      border-radius:20px;
      background:rgba(255,255,255,.74);
      border:1px solid var(--rr-border);
      padding:16px;
      min-height:116px;
    }
    .module-icon{
      width:34px;
      height:34px;
      display:grid;
      place-items:center;
      border-radius:13px;
      background:var(--rr-gradient-soft);
      color:var(--rr-primary);
      font-weight:900;
      margin-bottom:10px;
    }
    .module-item strong{display:block;color:var(--rr-title);font-size:15px;margin-bottom:4px}
    .module-item span{font-size:13px;color:var(--rr-muted)}
    .floating-badge{
      position:absolute;
      right:20px;
      bottom:18px;
      z-index:2;
      padding:13px 15px;
      border-radius:20px;
      background:rgba(255,255,255,.88);
      border:1px solid var(--rr-border);
      box-shadow:0 16px 38px rgba(94,50,70,.13);
    }
    .floating-badge b{display:block;color:var(--rr-primary);font-size:20px;line-height:1}
    .floating-badge small{color:var(--rr-muted);font-weight:700}

    .trust-strip{
      margin-top:42px;
      padding:18px;
      border-radius:28px;
      background:rgba(255,255,255,.62);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
      position:relative;
      z-index:1;
    }
    .trust-tags{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      justify-content:center;
    }
    .tag{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 13px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--rr-border);
      color:var(--rr-text);
      font-weight:800;
      font-size:13px;
    }
    .tag::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:999px;
      background:var(--rr-green);
    }

    .section-heading{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:38px;
    }
    .section-heading p{
      max-width:570px;
      margin:0;
      color:var(--rr-muted);
    }
    .feature-layout{
      display:grid;
      grid-template-columns:310px minmax(0,1fr);
      gap:26px;
      align-items:start;
    }
    .feature-menu{
      position:sticky;
      top:106px;
      padding:12px;
      border-radius:28px;
      background:rgba(255,255,255,.72);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
    }
    .feature-menu a{
      display:flex;
      align-items:center;
      gap:12px;
      padding:15px 16px;
      border-radius:20px;
      color:var(--rr-text);
      font-weight:800;
      margin-bottom:8px;
    }
    .feature-menu a:last-child{margin-bottom:0}
    .feature-menu a:hover,.feature-menu a.active{
      background:#FFF3EF;
      color:var(--rr-primary);
    }
    .feature-menu i{
      width:30px;
      height:30px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:var(--rr-gradient-soft);
      color:var(--rr-primary);
      font-style:normal;
      font-weight:900;
    }
    .feature-stack{display:grid;gap:18px}
    .feature-card{
      position:relative;
      overflow:hidden;
      border-radius:var(--rr-radius-lg);
      padding:30px;
      background:var(--rr-card);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
      transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
    }
    .feature-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--rr-shadow-hover);
      border-color:rgba(164,69,111,.28);
    }
    .feature-card::after{
      content:"";
      position:absolute;
      width:180px;
      height:180px;
      right:-80px;
      top:-90px;
      background:var(--rr-gradient-soft);
      border-radius:50%;
    }
    .feature-card-inner{
      display:grid;
      grid-template-columns:minmax(0,1fr) 190px;
      gap:26px;
      position:relative;
      z-index:1;
    }
    .check-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:10px}
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--rr-text);
    }
    .check-list li::before{
      content:"✓";
      flex:0 0 22px;
      height:22px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(111,160,131,.14);
      color:var(--rr-green);
      font-weight:900;
      line-height:1;
      margin-top:3px;
    }
    .data-badge{
      align-self:center;
      justify-self:end;
      width:170px;
      padding:18px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--rr-border);
      box-shadow:0 14px 30px rgba(94,50,70,.08);
    }
    .data-badge em{
      display:block;
      font-style:normal;
      color:var(--rr-primary);
      font-size:30px;
      line-height:1.1;
      font-weight:900;
    }
    .data-badge span{
      display:block;
      color:var(--rr-muted);
      font-size:13px;
      font-weight:800;
      margin-top:6px;
    }

    .timeline-wrap{
      position:relative;
      display:grid;
      grid-template-columns:repeat(4,minmax(0,1fr));
      gap:18px;
    }
    .timeline-wrap::before{
      content:"";
      position:absolute;
      left:8%;
      right:8%;
      top:42px;
      height:2px;
      background:linear-gradient(90deg,transparent,var(--rr-border-strong),transparent);
    }
    .scene-card{
      position:relative;
      z-index:1;
      border-radius:28px;
      padding:24px;
      background:rgba(255,255,255,.78);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
      transition:all .24s ease;
      min-height:260px;
    }
    .scene-card:nth-child(even){margin-top:34px}
    .scene-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--rr-shadow-hover);
      border-color:rgba(164,69,111,.26);
    }
    .scene-num{
      width:46px;
      height:46px;
      border-radius:18px;
      display:grid;
      place-items:center;
      background:var(--rr-gradient);
      color:#fff;
      font-weight:900;
      box-shadow:0 12px 24px rgba(164,69,111,.22);
      margin-bottom:18px;
    }
    .scene-card p{color:var(--rr-muted);margin-bottom:18px}
    .text-link{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--rr-primary);
      font-weight:900;
    }
    .text-link:hover{gap:12px;color:var(--rr-primary-dark)}

    .case-box{
      display:grid;
      grid-template-columns:minmax(0,1.35fr) 340px;
      gap:24px;
      align-items:stretch;
    }
    .case-main{
      border-radius:var(--rr-radius-lg);
      padding:36px;
      background:
        linear-gradient(135deg,rgba(255,255,255,.90),rgba(255,243,239,.84)),
        radial-gradient(circle at 92% 8%,rgba(244,179,122,.22),transparent 34%);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
    }
    .case-labels{display:flex;gap:9px;flex-wrap:wrap;margin:20px 0}
    .label{
      padding:6px 10px;
      border-radius:999px;
      background:#FFF3EF;
      color:var(--rr-primary);
      font-size:13px;
      font-weight:800;
      border:1px solid rgba(164,69,111,.14);
    }
    .case-columns{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:16px;
      margin-top:22px;
    }
    .case-mini{
      padding:18px;
      border-radius:22px;
      background:#fff;
      border:1px solid var(--rr-border);
    }
    .case-mini strong{display:block;color:var(--rr-title);margin-bottom:6px}
    .case-stats{
      display:grid;
      gap:16px;
    }
    .stat-card{
      border-radius:26px;
      padding:22px;
      background:var(--rr-gradient);
      color:#fff;
      box-shadow:0 18px 46px rgba(164,69,111,.20);
    }
    .stat-card:nth-child(2){
      background:linear-gradient(135deg,#6FA083,#A9BE83);
      box-shadow:0 18px 46px rgba(111,160,131,.18);
    }
    .stat-card:nth-child(3){
      background:linear-gradient(135deg,#8C4D70,#F4A261);
    }
    .stat-card b{display:block;font-size:34px;line-height:1.05;margin-bottom:7px}
    .stat-card span{font-weight:800;opacity:.92}
    .stat-card small{display:block;margin-top:8px;opacity:.76}

    .pricing-wrap{
      display:grid;
      grid-template-columns:minmax(0,.92fr) minmax(0,1.18fr) minmax(0,.92fr);
      gap:18px;
      align-items:center;
    }
    .price-card{
      position:relative;
      border-radius:var(--rr-radius-lg);
      padding:28px;
      background:rgba(255,255,255,.82);
      border:1px solid var(--rr-border);
      box-shadow:var(--rr-shadow);
      transition:all .24s ease;
    }
    .price-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--rr-shadow-hover);
      border-color:rgba(164,69,111,.26);
    }
    .price-card.featured{
      padding:36px 32px;
      background:
        linear-gradient(#fff,#fff) padding-box,
        var(--rr-gradient) border-box;
      border:2px solid transparent;
      box-shadow:0 24px 68px rgba(164,69,111,.17);
    }
    .recommend{
      position:absolute;
      right:24px;
      top:22px;
      border-radius:999px;
      padding:7px 12px;
      background:var(--rr-gradient);
      color:#fff;
      font-weight:900;
      font-size:13px;
    }
    .price{
      margin:18px 0 8px;
      color:var(--rr-title);
      font-size:34px;
      font-weight:900;
      line-height:1.1;
    }
    .price small{font-size:14px;color:var(--rr-muted);font-weight:800}
    .price-list{list-style:none;padding:0;margin:22px 0;display:grid;gap:11px}
    .price-list li{display:flex;gap:10px;color:var(--rr-text)}
    .price-list li::before{content:"•";color:var(--rr-primary);font-weight:900}

    .accordion-rr{display:grid;gap:14px}
    .accordion-rr .accordion-item{
      border:1px solid var(--rr-border);
      border-radius:22px;
      overflow:hidden;
      background:rgba(255,255,255,.78);
      box-shadow:0 10px 28px rgba(94,50,70,.05);
    }
    .accordion-rr .accordion-button{
      border:0;
      background:rgba(255,255,255,.72);
      color:var(--rr-title);
      font-weight:900;
      padding:20px 22px;
      line-height:1.45;
    }
    .accordion-rr .accordion-button:not(.collapsed){
      color:var(--rr-primary);
      background:#FFF3EF;
      box-shadow:none;
    }
    .accordion-rr .accordion-button::after{
      border-radius:50%;
      background-color:rgba(164,69,111,.10);
      background-size:14px;
      background-position:center;
      padding:12px;
    }
    .accordion-rr .accordion-body{
      padding:0 22px 22px;
      color:var(--rr-text);
      background:#FFF3EF;
    }

    .final-cta{
      position:relative;
      overflow:hidden;
      border-radius:36px;
      padding:44px;
      background:var(--rr-gradient);
      color:#fff;
      box-shadow:0 24px 70px rgba(164,69,111,.24);
    }
    .final-cta::before{
      content:"";
      position:absolute;
      width:310px;
      height:310px;
      right:-80px;
      top:-120px;
      border-radius:50%;
      background:rgba(255,255,255,.20);
    }
    .final-cta::after{
      content:"";
      position:absolute;
      width:170px;
      height:170px;
      left:8%;
      bottom:-96px;
      border-radius:50%;
      background:rgba(255,255,255,.14);
    }
    .final-cta h2,.final-cta p{color:#fff}
    .final-cta .btn-rr-secondary{background:rgba(255,255,255,.92)}
    .cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .cta-inner p{max-width:650px;margin-bottom:0;opacity:.9}

    .site-footer{
      margin-top:36px;
      padding:64px 0 28px;
      background:var(--rr-footer);
      color:rgba(255,255,255,.82);
      position:relative;
      overflow:hidden;
    }
    .site-footer::before{
      content:"";
      position:absolute;
      width:460px;
      height:460px;
      right:-180px;
      top:-220px;
      border-radius:50%;
      background:rgba(255,255,255,.08);
    }
    .footer-grid{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:1.5fr .7fr .9fr 1fr;
      gap:36px;
      padding-bottom:38px;
      border-bottom:1px solid rgba(255,255,255,.16);
    }
    .footer-brand .brand-title{color:#fff;white-space:normal;max-width:360px}
    .footer-brand .brand-sub{color:rgba(255,255,255,.65)}
    .footer-desc{margin-top:18px;color:rgba(255,255,255,.72)}
    .footer-title{font-size:16px;font-weight:900;color:#fff;margin-bottom:15px}
    .footer-links{display:grid;gap:10px}
    .footer-links a{color:rgba(255,255,255,.72);font-weight:700}
    .footer-links a:hover{color:#fff;transform:translateX(3px)}
    .footer-keywords{display:flex;flex-wrap:wrap;gap:8px}
    .footer-keywords span{
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.14);
      color:rgba(255,255,255,.78);
      font-size:13px;
      font-weight:800;
    }
    .footer-bottom{
      position:relative;
      z-index:1;
      display:flex;
      justify-content:space-between;
      gap:18px;
      padding-top:24px;
      color:rgba(255,255,255,.62);
      font-size:14px;
    }

    @media (max-width:1199.98px){
      .brand-wrap{min-width:auto}
      .brand-title{max-width:210px}
      .nav-chip-group .nav-link{padding:9px 12px}
      .feature-layout{grid-template-columns:260px minmax(0,1fr)}
      .timeline-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
      .timeline-wrap::before{display:none}
      .scene-card:nth-child(even){margin-top:0}
    }
    @media (max-width:991.98px){
      .site-header{padding:10px 0}
      .hero{padding:54px 0 32px}
      .product-panel{margin-top:34px}
      .section{padding:72px 0}
      .section-heading{display:block}
      .feature-layout{grid-template-columns:1fr}
      .feature-menu{position:relative;top:auto;display:flex;overflow-x:auto;gap:8px}
      .feature-menu a{white-space:nowrap;margin-bottom:0;min-width:max-content}
      .case-box{grid-template-columns:1fr}
      .pricing-wrap{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
      .cta-inner{display:block}
      .cta-inner .hero-actions{margin-bottom:0}
    }
    @media (max-width:767.98px){
      .brand-title{max-width:210px;font-size:14px}
      .brand-sub{font-size:11px}
      .hero-actions{display:grid;grid-template-columns:1fr;gap:11px}
      .btn-rr{width:100%;padding:13px 18px}
      .metric-row{grid-template-columns:1fr 1fr}
      .metric:last-child{grid-column:1 / -1}
      .product-panel{padding:20px;border-radius:30px}
      .module-grid{grid-template-columns:1fr}
      .floating-badge{position:relative;right:auto;bottom:auto;margin-top:14px}
      .trust-strip{margin-top:28px}
      .trust-tags{justify-content:flex-start;flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px}
      .tag{white-space:nowrap}
      .feature-card{padding:23px}
      .feature-card-inner{grid-template-columns:1fr}
      .data-badge{justify-self:start;width:100%}
      .timeline-wrap{grid-template-columns:1fr}
      .case-main{padding:24px}
      .case-columns{grid-template-columns:1fr}
      .final-cta{padding:30px 22px;border-radius:30px}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{display:block}
      .footer-bottom div+div{margin-top:8px}
    }
    @media (max-width:520px){
      h1{font-size:33px}
      .section{padding:62px 0}
      .metric-row{grid-template-columns:1fr}
      .metric:last-child{grid-column:auto}
      .panel-top{align-items:flex-start}
      .preview-card{padding:17px}
      .brand-mark{width:38px;height:38px;flex-basis:38px}
      .brand-title{max-width:170px}
    }

/* roulang page: category1 */
:root {
      --rr-primary: #A4456F;
      --rr-primary-dark: #7F3155;
      --rr-coral: #E97972;
      --rr-peach: #F4B37A;
      --rr-orange: #F4A261;
      --rr-green: #6FA083;
      --rr-bg: #FFF8F4;
      --rr-bg-soft: #FBEDEA;
      --rr-bg-mist: #FFF3EF;
      --rr-card: rgba(255, 255, 255, 0.88);
      --rr-card-solid: #FFFFFF;
      --rr-title: #2F1E2B;
      --rr-text: #5F4A55;
      --rr-muted: #8B7480;
      --rr-border: #F0D7D2;
      --rr-border-strong: rgba(164, 69, 111, 0.22);
      --rr-gradient: linear-gradient(135deg, #A4456F 0%, #E97972 48%, #F4B37A 100%);
      --rr-gradient-soft: linear-gradient(135deg, rgba(164,69,111,.13), rgba(233,121,114,.12), rgba(244,179,122,.16));
      --rr-shadow: 0 14px 40px rgba(94, 50, 70, 0.08);
      --rr-shadow-hover: 0 20px 60px rgba(164, 69, 111, 0.16);
      --rr-radius-sm: 14px;
      --rr-radius-md: 24px;
      --rr-radius-lg: 32px;
      --rr-radius-xl: 36px;
      --rr-container: 1200px;
      --rr-trans: 220ms ease;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--rr-text);
      background:
        radial-gradient(circle at 8% 4%, rgba(244, 179, 122, .22), transparent 28%),
        radial-gradient(circle at 92% 12%, rgba(164, 69, 111, .12), transparent 30%),
        linear-gradient(180deg, #FFF8F4 0%, #FFF8F4 55%, #FFF3EF 100%);
      line-height: 1.75;
      font-size: 16px;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--rr-trans), background var(--rr-trans), transform var(--rr-trans), box-shadow var(--rr-trans), border-color var(--rr-trans);
    }

    img, svg {
      max-width: 100%;
      display: block;
    }

    button, input, textarea, select {
      font: inherit;
    }

    .container {
      max-width: var(--rr-container);
    }

    .section {
      padding: 92px 0;
      position: relative;
    }

    .section-sm {
      padding: 68px 0;
    }

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 13px;
      border-radius: 999px;
      background: rgba(255, 255, 255, .72);
      border: 1px solid var(--rr-border);
      color: var(--rr-primary);
      font-size: 13px;
      font-weight: 700;
      margin-bottom: 16px;
      box-shadow: 0 8px 24px rgba(94, 50, 70, .05);
    }

    .section-kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: var(--rr-gradient);
      box-shadow: 0 0 0 4px rgba(164, 69, 111, .1);
    }

    .section-title {
      color: var(--rr-title);
      font-size: clamp(28px, 4vw, 40px);
      line-height: 1.18;
      letter-spacing: -0.02em;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .section-desc {
      color: var(--rr-muted);
      font-size: 17px;
      max-width: 720px;
      margin: 0;
    }

    .btn-rr {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      border-radius: 999px;
      padding: 12px 24px;
      font-size: 15px;
      font-weight: 700;
      line-height: 1.35;
      border: 1px solid transparent;
      min-height: 46px;
      cursor: pointer;
      white-space: nowrap;
      transition: transform var(--rr-trans), box-shadow var(--rr-trans), border-color var(--rr-trans), background var(--rr-trans), color var(--rr-trans);
    }

    .btn-rr-primary {
      color: #fff;
      background: var(--rr-gradient);
      box-shadow: 0 12px 26px rgba(164, 69, 111, .22);
    }

    .btn-rr-primary:hover,
    .btn-rr-primary:focus {
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(164, 69, 111, .32);
    }

    .btn-rr-secondary {
      color: var(--rr-primary-dark);
      background: rgba(255, 255, 255, .82);
      border-color: var(--rr-border-strong);
      box-shadow: 0 10px 24px rgba(94, 50, 70, .06);
    }

    .btn-rr-secondary:hover,
    .btn-rr-secondary:focus {
      color: var(--rr-primary);
      background: #FFF3EF;
      border-color: rgba(164, 69, 111, .32);
      transform: translateY(-2px);
      box-shadow: var(--rr-shadow);
    }

    .btn-rr:focus-visible,
    .nav-link:focus-visible,
    .mobile-nav-list a:focus-visible,
    .accordion-button:focus-visible {
      outline: none;
      box-shadow: 0 0 0 4px rgba(164, 69, 111, .22);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1030;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
    }

    .navbar-rr {
      padding: 14px 0;
      background: rgba(255, 248, 244, .82);
      border-bottom: 1px solid rgba(240, 215, 210, .7);
      box-shadow: 0 10px 34px rgba(94, 50, 70, .04);
    }

    .brand-wrap {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .brand-mark {
      position: relative;
      flex: 0 0 auto;
      width: 44px;
      height: 44px;
      border-radius: 16px;
      background: var(--rr-gradient);
      box-shadow: 0 12px 26px rgba(164, 69, 111, .22);
      overflow: hidden;
    }

    .brand-mark::before,
    .brand-mark::after {
      content: "";
      position: absolute;
      border-radius: 999px;
      background: rgba(255,255,255,.62);
    }

    .brand-mark::before {
      width: 24px;
      height: 11px;
      transform: rotate(-35deg);
      top: 13px;
      left: 10px;
    }

    .brand-mark::after {
      width: 18px;
      height: 18px;
      right: -3px;
      bottom: -2px;
      background: rgba(255,255,255,.28);
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.18;
    }

    .brand-title {
      color: var(--rr-title);
      font-size: 16px;
      font-weight: 800;
      letter-spacing: -0.01em;
      max-width: 310px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .brand-sub {
      color: var(--rr-muted);
      font-size: 12px;
      font-weight: 600;
      margin-top: 3px;
    }

    .nav-chip-group {
      padding: 6px;
      border: 1px solid var(--rr-border);
      border-radius: 999px;
      background: rgba(255,255,255,.58);
      box-shadow: inset 0 1px 0 rgba(255,255,255,.7);
      gap: 4px;
    }

    .nav-chip-group .nav-link {
      border-radius: 999px;
      padding: 9px 18px;
      color: var(--rr-text);
      font-size: 14px;
      font-weight: 700;
      line-height: 1.2;
    }

    .nav-chip-group .nav-link:hover {
      color: var(--rr-primary);
      background: #FFF3EF;
    }

    .nav-chip-group .nav-link.active {
      color: #fff;
      background: var(--rr-gradient);
      box-shadow: 0 8px 20px rgba(164, 69, 111, .18);
    }

    .navbar-toggler {
      border: 1px solid var(--rr-border);
      border-radius: 999px;
      width: 46px;
      height: 46px;
      padding: 0;
      background: rgba(255,255,255,.76);
    }

    .navbar-toggler:focus {
      box-shadow: 0 0 0 4px rgba(164, 69, 111, .16);
    }

    .offcanvas-rr {
      background: linear-gradient(180deg, #FFF8F4, #FFF3EF);
      border-left: 1px solid var(--rr-border);
    }

    .offcanvas-title {
      color: var(--rr-title);
      font-weight: 800;
    }

    .mobile-nav-list {
      display: grid;
      gap: 10px;
    }

    .mobile-nav-list a {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 13px 16px;
      border-radius: 18px;
      border: 1px solid var(--rr-border);
      background: rgba(255,255,255,.68);
      color: var(--rr-title);
      font-weight: 700;
    }

    .mobile-nav-list a:hover {
      color: var(--rr-primary);
      background: #FFF3EF;
      border-color: var(--rr-border-strong);
    }

    .mobile-nav-list a.active {
      color: #fff;
      background: var(--rr-gradient);
      border-color: transparent;
      box-shadow: 0 12px 28px rgba(164, 69, 111, .18);
    }

    .category-hero {
      padding: 82px 0 56px;
      position: relative;
      overflow: hidden;
    }

    .category-hero::before {
      content: "";
      position: absolute;
      inset: 22px 4% auto auto;
      width: 420px;
      height: 420px;
      border-radius: 999px;
      background: radial-gradient(circle, rgba(233,121,114,.2), transparent 65%);
      filter: blur(8px);
      pointer-events: none;
    }

    .hero-panel {
      position: relative;
      border-radius: var(--rr-radius-xl);
      background:
        linear-gradient(135deg, rgba(255,255,255,.92), rgba(255,243,239,.86)),
        var(--rr-gradient-soft);
      border: 1px solid var(--rr-border);
      box-shadow: var(--rr-shadow);
      padding: clamp(24px, 4vw, 42px);
      overflow: hidden;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      right: -76px;
      top: -92px;
      width: 220px;
      height: 220px;
      border-radius: 50%;
      background: rgba(244,179,122,.25);
    }

    .hero-labels {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .label-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      border: 1px solid rgba(164, 69, 111, .16);
      background: rgba(255,255,255,.72);
      color: var(--rr-primary-dark);
      font-size: 13px;
      font-weight: 700;
    }

    .category-hero h1 {
      position: relative;
      color: var(--rr-title);
      font-size: clamp(32px, 5vw, 52px);
      line-height: 1.14;
      font-weight: 800;
      letter-spacing: -0.035em;
      margin: 0 0 18px;
      max-width: 760px;
    }

    .hero-lead {
      font-size: 18px;
      color: var(--rr-text);
      max-width: 760px;
      margin-bottom: 26px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 26px;
    }

    .metric-row {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .metric {
      padding: 15px 16px;
      border-radius: 20px;
      background: rgba(255,255,255,.76);
      border: 1px solid var(--rr-border);
    }

    .metric strong {
      display: block;
      color: var(--rr-title);
      font-size: 22px;
      line-height: 1.2;
      font-weight: 800;
    }

    .metric span {
      color: var(--rr-muted);
      font-size: 13px;
      font-weight: 600;
    }

    .radar-card {
      position: relative;
      padding: 24px;
      border-radius: 30px;
      background: rgba(255,255,255,.78);
      border: 1px solid var(--rr-border);
      box-shadow: 0 16px 44px rgba(94, 50, 70, .08);
      overflow: hidden;
    }

    .radar-card::before {
      content: "";
      position: absolute;
      width: 190px;
      height: 190px;
      border-radius: 50%;
      background: conic-gradient(from 180deg, rgba(164,69,111,.24), rgba(233,121,114,.12), rgba(244,179,122,.22), rgba(164,69,111,.24));
      right: -50px;
      top: -35px;
      opacity: .85;
    }

    .radar-title {
      position: relative;
      color: var(--rr-title);
      font-weight: 800;
      font-size: 20px;
      margin-bottom: 16px;
    }

    .tag-cloud {
      position: relative;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 18px;
    }

    .tag-cloud span {
      display: inline-flex;
      padding: 8px 12px;
      border-radius: 999px;
      color: var(--rr-primary-dark);
      background: #FFF3EF;
      border: 1px solid rgba(164, 69, 111, .14);
      font-size: 13px;
      font-weight: 700;
    }

    .structure-list {
      position: relative;
      display: grid;
      gap: 12px;
    }

    .structure-item {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 13px;
      border-radius: 18px;
      background: rgba(255,255,255,.7);
      border: 1px solid rgba(240, 215, 210, .78);
    }

    .structure-icon {
      width: 38px;
      height: 38px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      background: var(--rr-gradient);
      font-weight: 900;
      flex: 0 0 auto;
    }

    .structure-item b {
      display: block;
      color: var(--rr-title);
      line-height: 1.2;
      margin-bottom: 2px;
    }

    .structure-item small {
      color: var(--rr-muted);
      font-weight: 600;
    }

    .filter-section {
      padding: 20px 0 64px;
    }

    .filter-bar {
      display: flex;
      align-items: center;
      gap: 10px;
      overflow-x: auto;
      padding: 8px;
      border: 1px solid var(--rr-border);
      border-radius: 999px;
      background: rgba(255,255,255,.62);
      box-shadow: var(--rr-shadow);
      scrollbar-width: none;
    }

    .filter-bar::-webkit-scrollbar {
      display: none;
    }

    .filter-chip {
      flex: 0 0 auto;
      border: 1px solid var(--rr-border);
      background: rgba(255,255,255,.78);
      color: var(--rr-text);
      border-radius: 999px;
      padding: 10px 16px;
      font-size: 14px;
      font-weight: 800;
      transition: all var(--rr-trans);
    }

    .filter-chip:hover {
      color: var(--rr-primary);
      background: #FFF3EF;
      border-color: var(--rr-border-strong);
      transform: translateY(-1px);
    }

    .filter-chip.active {
      color: #fff;
      border-color: transparent;
      background: var(--rr-gradient);
      box-shadow: 0 12px 26px rgba(164, 69, 111, .18);
    }

    .content-mix {
      background: linear-gradient(180deg, rgba(251,237,234,.72), rgba(255,248,244,.96));
      border-top: 1px solid rgba(240, 215, 210, .62);
      border-bottom: 1px solid rgba(240, 215, 210, .62);
    }

    .main-feature-card,
    .mini-card,
    .list-entry,
    .rule-panel,
    .faq-shell,
    .cta-banner {
      border: 1px solid var(--rr-border);
      box-shadow: var(--rr-shadow);
    }

    .main-feature-card {
      height: 100%;
      padding: 30px;
      border-radius: var(--rr-radius-lg);
      background:
        linear-gradient(150deg, rgba(255,255,255,.9), rgba(255,243,239,.82)),
        var(--rr-gradient-soft);
      overflow: hidden;
      transition: transform var(--rr-trans), box-shadow var(--rr-trans), border-color var(--rr-trans);
    }

    .main-feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--rr-shadow-hover);
      border-color: var(--rr-border-strong);
    }

    .abstract-cover {
      height: 230px;
      border-radius: 28px;
      margin-bottom: 24px;
      background:
        radial-gradient(circle at 22% 28%, rgba(255,255,255,.78), transparent 18%),
        radial-gradient(circle at 70% 72%, rgba(244,179,122,.42), transparent 22%),
        linear-gradient(135deg, rgba(164,69,111,.9), rgba(233,121,114,.76), rgba(244,179,122,.68));
      position: relative;
      overflow: hidden;
    }

    .abstract-cover::before {
      content: "";
      position: absolute;
      left: 24px;
      bottom: 24px;
      width: 74%;
      height: 96px;
      border-radius: 24px;
      background: rgba(255,255,255,.22);
      border: 1px solid rgba(255,255,255,.32);
    }

    .abstract-cover::after {
      content: "";
      position: absolute;
      width: 112px;
      height: 112px;
      border-radius: 50%;
      right: 28px;
      top: 28px;
      background: rgba(255,255,255,.26);
      box-shadow: -38px 58px 0 rgba(255,255,255,.18);
    }

    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 14px 0 20px;
    }

    .card-tags span {
      display: inline-flex;
      border-radius: 999px;
      padding: 6px 10px;
      background: #FFF3EF;
      color: var(--rr-primary-dark);
      border: 1px solid rgba(164,69,111,.13);
      font-size: 12px;
      font-weight: 800;
    }

    .feature-title,
    .mini-card h3,
    .list-entry h3 {
      color: var(--rr-title);
      font-weight: 800;
      letter-spacing: -0.015em;
    }

    .feature-title {
      font-size: 27px;
      line-height: 1.25;
      margin-bottom: 12px;
    }

    .feature-desc {
      color: var(--rr-text);
      margin-bottom: 0;
    }

    .mini-card-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
      height: 100%;
    }

    .mini-card {
      padding: 22px;
      border-radius: 26px;
      background: rgba(255,255,255,.86);
      transition: transform var(--rr-trans), box-shadow var(--rr-trans), border-color var(--rr-trans);
    }

    .mini-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--rr-shadow-hover);
      border-color: var(--rr-border-strong);
    }

    .mini-icon {
      width: 48px;
      height: 48px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 18px;
      color: #fff;
      background: var(--rr-gradient);
      font-weight: 900;
      margin-bottom: 16px;
    }

    .mini-card h3 {
      font-size: 20px;
      margin-bottom: 9px;
    }

    .mini-card p {
      color: var(--rr-muted);
      margin-bottom: 12px;
      font-size: 15px;
    }

    .mini-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      color: var(--rr-primary-dark);
      font-size: 12px;
      font-weight: 800;
    }

    .horizontal-list {
      display: grid;
      gap: 14px;
      margin-top: 22px;
    }

    .list-entry {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 18px;
      padding: 18px 20px;
      border-radius: 24px;
      background: rgba(255,255,255,.82);
      transition: transform var(--rr-trans), box-shadow var(--rr-trans), border-color var(--rr-trans);
    }

    .list-entry:hover {
      transform: translateY(-3px);
      box-shadow: var(--rr-shadow-hover);
      border-color: var(--rr-border-strong);
    }

    .entry-icon {
      width: 48px;
      height: 48px;
      border-radius: 18px;
      background: #FFF3EF;
      color: var(--rr-primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      border: 1px solid rgba(164,69,111,.13);
    }

    .list-entry h3 {
      font-size: 18px;
      margin: 0 0 4px;
    }

    .list-entry p {
      color: var(--rr-muted);
      margin: 0;
      font-size: 15px;
    }

    .entry-arrow {
      color: var(--rr-primary);
      font-weight: 900;
      font-size: 22px;
    }

    .rule-panel {
      padding: clamp(24px, 4vw, 40px);
      border-radius: var(--rr-radius-lg);
      background: rgba(255,255,255,.82);
    }

    .rule-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
      margin-top: 28px;
    }

    .rule-card {
      padding: 20px;
      border-radius: 24px;
      background: linear-gradient(180deg, #FFFFFF, #FFF8F4);
      border: 1px solid var(--rr-border);
      transition: transform var(--rr-trans), border-color var(--rr-trans), box-shadow var(--rr-trans);
    }

    .rule-card:hover {
      transform: translateY(-4px);
      border-color: var(--rr-border-strong);
      box-shadow: 0 16px 36px rgba(94, 50, 70, .08);
    }

    .rule-num {
      width: 36px;
      height: 36px;
      border-radius: 14px;
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--rr-gradient);
      font-weight: 900;
      margin-bottom: 14px;
    }

    .rule-card h3 {
      color: var(--rr-title);
      font-size: 18px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .rule-card p {
      color: var(--rr-muted);
      font-size: 15px;
      margin: 0;
    }

    .step-strip {
      margin-top: 30px;
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      padding: 14px;
      border-radius: 28px;
      background: #FFF3EF;
      border: 1px solid var(--rr-border);
    }

    .step-item {
      position: relative;
      padding: 16px;
      border-radius: 20px;
      background: rgba(255,255,255,.74);
      color: var(--rr-title);
      font-weight: 800;
      text-align: center;
    }

    .step-item small {
      display: block;
      color: var(--rr-muted);
      font-weight: 600;
      margin-top: 3px;
    }

    .scenario-section {
      background: #FFF8F4;
    }

    .scenario-board {
      display: grid;
      grid-template-columns: 1.05fr .95fr;
      gap: 22px;
      align-items: stretch;
    }

    .rank-card {
      border-radius: var(--rr-radius-lg);
      padding: 28px;
      border: 1px solid var(--rr-border);
      background:
        linear-gradient(135deg, rgba(47,30,43,.96), rgba(127,49,85,.92)),
        var(--rr-gradient);
      color: rgba(255,255,255,.82);
      box-shadow: 0 22px 60px rgba(47, 30, 43, .18);
    }

    .rank-card h2 {
      color: #fff;
      font-weight: 800;
      line-height: 1.2;
      margin-bottom: 14px;
    }

    .rank-list {
      display: grid;
      gap: 12px;
      margin-top: 24px;
    }

    .rank-row {
      display: grid;
      grid-template-columns: auto 1fr auto;
      gap: 12px;
      align-items: center;
      padding: 14px;
      border-radius: 20px;
      background: rgba(255,255,255,.09);
      border: 1px solid rgba(255,255,255,.14);
    }

    .rank-no {
      width: 34px;
      height: 34px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,.18);
      color: #fff;
      font-weight: 900;
    }

    .rank-row b {
      color: #fff;
      display: block;
      line-height: 1.2;
    }

    .rank-row span {
      color: rgba(255,255,255,.66);
      font-size: 13px;
      font-weight: 600;
    }

    .rank-score {
      color: #FFE0C4;
      font-weight: 900;
    }

    .side-note-grid {
      display: grid;
      gap: 16px;
    }

    .note-card {
      padding: 24px;
      border-radius: 28px;
      background: rgba(255,255,255,.84);
      border: 1px solid var(--rr-border);
      box-shadow: var(--rr-shadow);
    }

    .note-card strong {
      display: block;
      color: var(--rr-title);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 8px;
    }

    .note-card p {
      margin: 0;
      color: var(--rr-muted);
    }

    .faq-shell {
      border-radius: var(--rr-radius-lg);
      background: rgba(255,255,255,.74);
      padding: 14px;
    }

    .accordion-rr {
      display: grid;
      gap: 12px;
    }

    .accordion-rr .accordion-item {
      border: 1px solid var(--rr-border);
      border-radius: 22px;
      overflow: hidden;
      background: rgba(255,255,255,.85);
      box-shadow: none;
    }

    .accordion-rr .accordion-button {
      border: 0;
      background: rgba(255,255,255,.88);
      color: var(--rr-title);
      font-weight: 800;
      padding: 18px 20px;
      border-radius: 22px;
      box-shadow: none;
    }

    .accordion-rr .accordion-button:not(.collapsed) {
      color: var(--rr-primary);
      background: #FFF3EF;
      box-shadow: none;
    }

    .accordion-rr .accordion-button::after {
      filter: sepia(18%) saturate(1280%) hue-rotate(290deg);
      opacity: .72;
    }

    .accordion-rr .accordion-body {
      padding: 2px 20px 20px;
      color: var(--rr-text);
      background: #FFF3EF;
    }

    .cta-section {
      padding-top: 44px;
      padding-bottom: 92px;
    }

    .cta-banner {
      position: relative;
      overflow: hidden;
      border-radius: var(--rr-radius-xl);
      padding: clamp(28px, 5vw, 48px);
      background:
        radial-gradient(circle at 8% 12%, rgba(255,255,255,.28), transparent 24%),
        radial-gradient(circle at 90% 78%, rgba(244,179,122,.35), transparent 24%),
        var(--rr-gradient);
      color: rgba(255,255,255,.86);
    }

    .cta-banner::after {
      content: "";
      position: absolute;
      right: -80px;
      top: -70px;
      width: 240px;
      height: 240px;
      border-radius: 50%;
      border: 34px solid rgba(255,255,255,.12);
    }

    .cta-banner h2 {
      position: relative;
      color: #fff;
      font-size: clamp(28px, 4vw, 42px);
      font-weight: 800;
      line-height: 1.18;
      letter-spacing: -0.025em;
      margin-bottom: 14px;
    }

    .cta-banner p {
      position: relative;
      max-width: 760px;
      margin-bottom: 24px;
      font-size: 17px;
    }

    .cta-banner .btn-rr-secondary {
      background: rgba(255,255,255,.94);
      border-color: rgba(255,255,255,.44);
    }

    .site-footer {
      padding: 64px 0 28px;
      background:
        radial-gradient(circle at 12% 10%, rgba(244,179,122,.18), transparent 28%),
        linear-gradient(135deg, #2F1E2B 0%, #5A2C42 54%, #7A4A36 100%);
      color: rgba(255,255,255,.72);
    }

    .site-footer .brand-title {
      color: #fff;
    }

    .site-footer .brand-sub {
      color: rgba(255,255,255,.62);
    }

    .site-footer .brand-mark {
      box-shadow: 0 14px 28px rgba(0,0,0,.18);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.35fr .8fr 1fr 1fr;
      gap: 34px;
      align-items: start;
    }

    .footer-desc {
      margin-top: 18px;
      max-width: 380px;
      color: rgba(255,255,255,.66);
    }

    .footer-title {
      color: #fff;
      font-size: 15px;
      font-weight: 800;
      margin-bottom: 14px;
    }

    .footer-links {
      display: grid;
      gap: 9px;
    }

    .footer-links a {
      color: rgba(255,255,255,.68);
    }

    .footer-links a:hover {
      color: #fff;
      transform: translateX(3px);
    }

    .footer-keywords {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .footer-keywords span {
      display: inline-flex;
      padding: 7px 10px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,.14);
      background: rgba(255,255,255,.08);
      color: rgba(255,255,255,.76);
      font-size: 12px;
      font-weight: 700;
    }

    .footer-bottom {
      margin-top: 42px;
      padding-top: 22px;
      border-top: 1px solid rgba(255,255,255,.12);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      color: rgba(255,255,255,.56);
      font-size: 13px;
    }

    @media (max-width: 1199.98px) {
      .brand-title {
        max-width: 240px;
      }

      .rule-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 991.98px) {
      .section {
        padding: 72px 0;
      }

      .category-hero {
        padding-top: 56px;
      }

      .metric-row {
        grid-template-columns: repeat(3, minmax(160px, 1fr));
        overflow-x: auto;
        padding-bottom: 4px;
      }

      .mini-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        margin-top: 18px;
      }

      .scenario-board {
        grid-template-columns: 1fr;
      }

      .step-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    @media (max-width: 767.98px) {
      body {
        font-size: 15px;
      }

      .navbar-rr {
        padding: 10px 0;
      }

      .brand-mark {
        width: 40px;
        height: 40px;
        border-radius: 14px;
      }

      .brand-title {
        max-width: 188px;
        font-size: 14px;
      }

      .brand-sub {
        font-size: 11px;
      }

      .category-hero {
        padding: 38px 0 34px;
      }

      .hero-panel,
      .main-feature-card,
      .rule-panel,
      .rank-card,
      .cta-banner {
        border-radius: 28px;
      }

      .hero-actions .btn-rr,
      .cta-banner .btn-rr {
        width: 100%;
      }

      .metric-row {
        grid-template-columns: 1fr;
      }

      .filter-bar {
        border-radius: 24px;
      }

      .mini-card-grid {
        grid-template-columns: 1fr;
      }

      .list-entry {
        grid-template-columns: auto 1fr;
      }

      .entry-arrow {
        grid-column: 2;
        justify-self: end;
      }

      .rule-grid,
      .step-strip {
        grid-template-columns: 1fr;
      }

      .rank-row {
        grid-template-columns: auto 1fr;
      }

      .rank-score {
        grid-column: 2;
      }

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .section {
        padding: 58px 0;
      }

      .section-sm {
        padding: 48px 0;
      }

      .hero-panel {
        padding: 22px;
      }

      .category-hero h1 {
        font-size: 31px;
      }

      .hero-lead {
        font-size: 16px;
      }

      .abstract-cover {
        height: 190px;
      }

      .main-feature-card,
      .mini-card,
      .note-card {
        padding: 20px;
      }

      .filter-chip {
        padding: 9px 13px;
        font-size: 13px;
      }
    }